Agar Cell Diffusion - Exploratorium

4th NGSS STEM Conference MAKING SCIENCE COUNT. Integrating Math into an NGSS Classroom January 20, 2017 | Pier 15, San Francisco, CA. agar Cell Diffusion Use cubes of agar to investigate how cell size impacts Diffusion . All biological cells require the transport of materials across the plasma membrane into and out of the cell. By infusing cubes of agar with a pH indicator, and then soaking the treated cubes in vinegar, you can model how Diffusion occurs in cells . Then, by observing cubes of different sizes, you can discover why larger cells might need extra help to transport materials. Tools and Materials agar - agar powder Digital scale Graduated cylinder Water Whisk or fork Microwaveable bowl or container at least 500ml in volume Microwave (not shown). Hot pad or oven mitt Heat-safe surface pH indicator such as bromothymol blue OR phenolphthalein 4th NGSS STEM Conference MAKING SCIENCE COUNT. Integrating Math into an NGSS Classroom January 20, 2017 | Pier 15, San Francisco, CA.

This Snack fits well into a series of investigations on osmosis and diffusion. The Naked Egg Snack will allow students to explore how concentration gradients power movement of materials into and out of cells. The Cellular Soap Opera Snack will help students consider the types of materials that move through cell mem-branes.

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  Agar, Cells, Diffusion, Exploratorium, Agar cell diffusion

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